The SDS-max Demolition Hammer weighs only 12.4 lbs., making it an ideal hammer for hard-to-reach applications. This 10 Amp tool that gets the job done, delivering 5.6 Ft.-Lbs. of impact energy and a max of 2,800 BPM. It has Vario-Lock positioning, which allows for rotating and locking the chisel with precision The SDS-max chuck system provides tool free bit changes. And the demo hammer has a 360 degree rotating auxiliary handle for better grip positioning, and an ergonomic grip area, for better comfort when chiseling in a wide variety of positions.